JP6748192B2 - Inner tank lock mechanism and washing machine - Google Patents

Description

The present invention relates to the field of washing machines, and more particularly to a lock mechanism for an inner tub and a washing machine.

In the conventional pulsator type washing machine, the inner tub and the outer tub communicate with each other through the water passage holes on the inner tub. Although the inner tank is a washing tank and the outer tank is a water injection tank, the water filled between the inner tank and the outer tank side wall is not used for cleaning, only the water in the inner tank is used for actual cleaning. Therefore, a large amount of water resources are wasted. In addition, if there is too much water between the inner tank and the outer tank, the concentration of the liquid detergent/powdered detergent in the cleaning liquid may decrease. In addition, since the water flow frequently flows between the inner tank and the outer tank, the area between the inner tank and the outer tank side wall becomes a reservoir for dirt during continuous use. For this reason, water stains from tap water, loose substances from powder detergents, cellulose in clothes, organic substances in the human body, and dust and bacteria brought in by clothes are very easily retained between the inner and outer tank side walls. Molds propagate when a large amount of dirt accumulated inside a washing machine with a long usage history is not effectively removed. If such dirt that cannot be seen by the user is not removed, bacteria adhere to clothes and are brought to the human body after the next washing, resulting in cross infection.

Patent Document 1 relates to a fully automatic washing machine mainly including a housing, a washing/dehydrating tank, a water injection tank, and a drive device. The water injection tank is attached to the outside of the washing/dehydrating tank and fixedly connected to the housing. Further, a sealing device is provided between the bottom surface of the inner wall of the water injection tank and the bottom surface of the outer wall of the washing/dehydrating tank, and a sealing chamber is formed in the sealing device. No through hole is provided in the outer wall of the washing/dehydrating tank, and a drain port communicating with the sealed chamber is provided in the bottom portion. The water injection tank has a drainage port communicating with the drainage pipe, and the drainage pipe is provided with a drainage valve. Further, the water injection tank is fixedly connected to the housing via a suspension rod. One end of the suspension rod is connected to the inner wall of the upper end of the housing, and the other end is connected to the outer wall of the water injection tank. However, after operating for a long period of time, the hermetically sealed structure wears out over a long period of time, and water leakage easily occurs. In addition, when the water quality is poor and the sand content is high, the service life is greatly shortened and proper functions cannot be exerted. In addition, it is not suitable for use when the cleaning capacity is large, resulting in poor reliability.

In view of the above, the present invention is proposed.

Chinese Patent Application No. CN2004202107890.8

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the defects in the prior art and provide an inner tub locking mechanism and a washing machine.

To achieve this object, the present invention uses the following technical solution. That is, in a lock mechanism of an inner tank including a lock rod capable of reciprocating in an axial direction, a sliding path in which the lock rod moves, and a drive unit that drives the movement of the lock rod, the lock mechanism further includes a crank connecting rod structure. The lower end of the rod is connected to a connecting rod having a crank connecting rod structure, and an idle stroke is provided between the connecting rod and the crank and/or between the connecting rod and the lock rod.

The idle stroke is a fixed movable space provided in the longitudinal direction of the connecting rod, and even if the connecting end of the crank and/or the lock rod moves in the movable space, the locked state does not change.

The connecting rod is a connecting arm, and hinge connecting holes are provided at both ends of the connecting arm. The hinge connecting hole at one end of the connecting arm is hinged to the end of the lock rod. The hinge connection holes at the ends are hingedly connected to the crank, and one or two of the hinge connection holes are elliptical holes.

The connecting rod includes a connecting arm, a first spring, and a slide block. One end of the first spring is fixed to the connecting arm, the other end of the first spring is fixed to the slide block, and the slide block is connected to the connecting arm. One end of the connecting arm, to which the first spring is fixed, is connected so as to slide with respect to the lock rod, and one end of the connecting arm provided with a slide block is hinged to the crank via the slide block. Connected.

A recess groove/notch is provided at the center of the connecting arm, and the first spring and the slide block are connected in series, and then provided in the recess groove/notch in the longitudinal direction. Is slidably connected to the groove/notch, one end of the first spring is fixed to the end of the groove/notch, and the other end is fixed to the slide block. Preferably, mounting studs are provided respectively on the end of the groove/notch and the end surface of the slide block facing the end, and both ends of the first spring are covered by the mounting stud. Preferably, the two end surfaces of the mounting stud that face each other are inclined surfaces or step end surfaces.

A boss is provided on the upper portion of the lock rod, and a second spring is provided on the lower portion of the boss. One end of the second spring contacts the lower surface of the boss and the other end is fixed, and the lock rod moves downward. When doing, the second spring is compressed.

The lock mechanism further includes a fixed base of a lock rod, a sliding path is provided in the center of the fixed base, the lock rod penetrates the sliding path, and preferably the other end of the second spring is It is fixed to the fixed base.

The lock mechanism further includes a fixed casing, the fixed casing is fixed to an upper portion of the fixed base, the lock rod and the sliding path are provided in the fixed casing, and a sealing structure is provided between the fixed casing and the lock rod. Preferably, the sealing structure is a stretchable sealing cover.

The crank is connected to a rotary motor, the rotary motor is provided in a housing, and the housing is provided with a mounting portion, and the mounting portion is fixed to a lower portion of a fixed base, or the mounting portion and the fixed portion. The base is integrally molded. Preferably, the crank is an eccentric wheel, an eccentric shaft of the eccentric wheel is hingedly connected to the connecting rod, and a center of the eccentric wheel is connected to the rotary motor.

In the washing machine including the lock mechanism, the lock mechanism is provided in the outer tub of the washing machine, the lock hole is provided in the inner tub, and when the lock rod enters the lock hole, the inner tub is locked and the lock rod is locked. When separated from the hole, the inner tank is unlocked, and a sealing structure is provided between the lock mechanism and the outer tank. Preferably, the outer tank is provided with a mounting hole for a locking mechanism, the fixed base of the locking mechanism is mounted on the bottom of the outer tank, and the fixed casing of the locking mechanism is mounted in the mounting hole, and is mounted to the fixed casing. A sealing structure is provided between the holes.

The following beneficial effects can be obtained by using the above technical solution in the present invention.

1. A position switch is provided in the lock mechanism described in the present invention, and when the lock rod enters the lock hole and locks the position, the trigger structure gives a trigger to the position switch, and the position switch outputs a position lock signal. To do. When the lock rod contracts and separates from the lock hole and recovers the position, the trigger structure gives a trigger to the position switch to output a position lock release signal. As described above, the control board of the washing machine controls the washing machine to execute the next process. Since it is correctly determined whether the lock rod is position locked or released based on the position of the lock rod, the judgment is accurate and the structure is simple.

2. The lock mechanism described in the present invention is provided with an idle stroke. When the lock mechanism receives an error signal that the lock rod is extended but has not entered the lock hole, the lock rod is in contact with the bottom of the inner tank and stopped. Then, the rotary motor drives the crank or the connecting rod to move within the idle stroke. Then, when the motor exceeds the highest drive level, the motor continues to drive so that the lock rod moves downward and the position is restored, and the process proceeds to the next operation cycle again. Therefore, the motor or the bottom of the inner tub is not damaged, and manual adjustment and disassembly maintenance of the washing machine are not required. As a result, the washing machine is prevented from malfunctioning and the user is not required to take unnecessary trouble.

3. The drainage control mechanism described in the present invention is provided with an idle stroke. When the drainage control mechanism receives an error signal that the valve body is extended but has not entered the drainage port, the valve body is in contact with the bottom of the inner tank. Then, the rotary motor drives the crank or the connecting rod to move within the idle stroke. When the motor exceeds the highest driving position, the valve body moves downward to recover the position, and the motor continues driving so as to proceed to the next operation cycle again. Therefore, the motor or the bottom of the inner tub is not damaged, and manual adjustment and disassembly maintenance of the washing machine are not required. As a result, the washing machine is prevented from malfunctioning and the user is not required to take unnecessary trouble.

4. By controlling the operating procedure of the lock mechanism of the inner tank and the drainage control mechanism at the drainage port of the inner tank by the control method of the present invention, in addition to the cleaning being realized without the presence of water between the inner tank and the outer tank, Normal dehydration is also possible. In addition, according to the control method described above, accurate control is performed, and water-saving washing by the washing machine is guaranteed without any problem.

Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a structural diagram of a washing machine of the present invention. FIG. 2 is a perspective view of the lock mechanism of the present invention. FIG. 3 is a sectional view of the lock mechanism of the present invention. FIG. 4 is a diagram showing the structures of the lock rod and the position switch of the present invention. FIG. 5 is a diagram showing the structure of the lock rod and the position switch of the present invention. FIG. 6 is a structural diagram of the connecting rod of the lock mechanism according to the present invention. FIG. 7 is a perspective view of the drainage control mechanism of the present invention. FIG. 8 is a front view of the drainage control mechanism of the present invention. FIG. 9 is a sectional view of the drainage control mechanism of the present invention. FIG. 10 is an enlarged view of part A of FIG. FIG. 11 is an enlarged view of part A of FIG. FIG. 12 is a structural diagram of a part of the drainage control mechanism in the present invention. FIG. 13 is a flowchart of a method for controlling a washing machine according to the present invention.

As shown in FIG. 1, the washing machine of the present invention includes an inner tub 100 and an outer tub 200, and the inner tub body 101 has no water leakage hole communicating with the outer tub. A drain port 105 is provided in the bottom 102 of the inner tank, and a drain hole 106 is provided in the upper part of the inner tank body 101 over the entire circumference. At the time of cleaning, the drain port 105 is closed, and the water level falls below the height of the drain hole 106. Water exists only in the inner tank 100 and does not exist between the inner tank 100 and the outer tank 200. When the cleaning is completed, the drain port 105 is opened, and most of the water is drained from the drain port 105. At the time of dehydration, the inner tank 100 rotates, and the water discharged from the clothes rises along the tank wall due to the centrifugal force. Then, when the water is discharged from the drain hole 106 in the upper part of the inner tank between the inner tank and the outer tank, it is subsequently discharged from the outer tank drain port of the outer tank 200. As described above, water is retained only in the inner tank 100 during cleaning, and no cleaning water is present between the inner tank and the outer tank, which saves water. In addition, since dirt is not accumulated in the region between the inner tank and the outer tank side wall, the space between the inner tank and the outer tank is kept clean, and bacterial growth is avoided. In the drainage and/or dehydration process, the drainage port 105 is opened, and most of the water and sediment such as mud and particles are discharged from the lower drainage port 105 to the outer tank. On the other hand, the water of clothes is discharged from the drain hole 106 in the upper part of the inner tub to the outer tub when it is dehydrated by the high speed rotation of the inner tub, and then is directly discharged to the outside of the washing machine from the drain port and drain pipe of the outer tub. Emitted. As a result, quick drainage is achieved, and drainage and dirt discharge effects are improved.

In the present invention, a drainage control mechanism 400 that controls opening/closing of the drainage port 105 is provided at the bottom of the drainage port 105. During water supply/washing, the drainage control mechanism 400 controls the drainage port 105 so that the drainage port 105 is closed and the drainage port 105 is closed. On the other hand, during drainage/dehydration, the drainage control mechanism 400 controls the drainage port 105 to be opened.

The drainage control mechanism 400 is provided at the bottom of the outer tub 200 and is fixed in the circumferential direction. In addition, the drainage port 105 is provided in the inner tank 100, and the inner tank rotates during dehydration. Therefore, when the drainage control mechanism 400 needs to close the drainage port 105, these positions are not always at the same position. Therefore, in the present invention, the lock mechanism 300 is added to the bottom of the inner tank 100. The lock mechanism 300 can lock the inner tank 100 after positioning the inner tank so that the drain outlet 105 corresponds to the position of the drain control mechanism 400, and subsequently, the drain controller 105 closes the drain outlet 105. Be done. The lock mechanism 300 further effectively prevents the drainage control mechanism 400 at the bottom of the inner tub that controls the opening/closing of the drainage port 105 from being invalidated when the inner tub 100 rotates during water supply and washing of the washing machine. It is possible.

A lock hole 301 is provided at the bottom of the inner tank. The lock hole 301 is a blind hole and does not communicate with the inside of the inner tank. The lock mechanism 300 for the inner tank described in the present invention is attached to the bottom of the outer tank. The lock mechanism 300 includes at least a retractable lock rod 302, and the lock rod 302 is fixed in the circumferential direction. During cleaning and rinsing, the lock rod 302 moves upward and enters the lock hole 301, so that the inner tank 100 is locked and cannot rotate. At this time, since the drainage control mechanism 400 closes the drainage port 105, water does not exist between the inner tank and the outer tank. Further, since the inner tank 100 is locked, it is possible to avoid invalidating the drainage control mechanism 400. On the other hand, at the time of dehydration, the lock rod 302 moves downward to separate from the lock hole 301, and the inner tub rotates in the circumferential direction to dehydrate the clothes inside.

When it is necessary to close the drain outlet 105 at the bottom of the inner tank 100, the lock rod 302 moves upward and enters the lock hole 301. As a result, the inner tank 100 is locked, and the drainage control mechanism 400 closes the drainage port 105. When the inner tank 100 needs to rotate, the lock rod 302 moves downward and disengages from the lock hole 301, so that the inner tank can rotate in the circumferential direction. Further, since the lock rod 302 moves downward until it becomes flush with the inner bottom surface of the outer tub 200, it does not affect the rotation of the inner tub 100.

Example 1
As shown in FIGS. 2 to 6, the lock mechanism described in the present invention includes a lock rod 302 that can reciprocate in the axial direction, a sliding path in which the lock rod moves, and a drive unit that drives the movement of the lock rod. At least include. The inner tank 100 is locked when the lock rod 302 enters the lock hole 301, and the lock of the inner tank 100 is released when the lock rod 302 is disengaged from the lock hole 301.

The lock mechanism further includes a fixed base 303 of the lock rod 302. A sliding path 304 is provided at the center of the fixed base 303, and the lock rod 302 penetrates the sliding path 304. Preferably, the fixed base 303 has an annular structure, and the center of the fixed base 303 is bent upward or downward to form the sliding path 304.

The locking mechanism further includes a fixed casing 305. The fixed casing 305 is attached to the upper part of the fixed base 303 and fixedly connected to the fixed base 303, but may be screwed. The lock rod 302 and the sliding path 304 are provided in the fixed casing 305, and a sealing structure is provided between the fixed casing 305 and the lock rod 302. The sealing structure is a stretchable structure, preferably a corrugated sealing cover 307. One end of the sealing cover is sealingly connected to the lock rod, and the other end is sealingly connected to the fixed casing.

A boss 320 is provided above the lock rod, and a second spring 321 is provided below the boss 320. The second spring 321 has one end contacting the lower surface of the boss and the other end fixed. When the lock rod 302 moves downward, the second spring 321 is compressed. Preferably, the other end of the second spring 321 is fixed in contact with the fixed base 303, and the lock rod 302 is driven to move upward by the restoring force of the second spring 321.

The lock mechanism further includes a crank connecting rod structure. The lower end of the lock rod is connected to a connecting rod having a crank connecting rod structure, and the crank is connected to a rotary motor 324. Preferably, the rotary motor 324 is provided inside the housing 328. A mounting portion 329 is provided on the housing, and the mounting portion 329 is mounted on the lower end of the fixed base. Further, a through hole through which the lock rod 302 passes is provided in the center of the mounting portion.

The downward position recovery movement of the lock rod 302 is driven by the crank connecting rod structure. On the other hand, the upward extension of the lock rod 302 is driven by the recovery force of the second spring 321 after the pulling force of the crank connecting rod structure is released.

Preferably, the crank is an eccentric wheel 323. An eccentric shaft of the eccentric wheel is hingedly connected to the connecting rod, and a center of the eccentric wheel is connected to a motor shaft of a rotary motor. Each time the rotary motor makes one rotation, the lock rod operates for one cycle, and it is possible to extend outward from the contracted state until the lock hole is locked, and then contract again to restore the position.

The lock mechanism is provided at the bottom of the outer tub of the washing machine, and a sealing structure is provided between the lock mechanism and the outer tub. Preferably, the outer tank is provided with a first mounting hole 201 of a lock mechanism. The fixed base of the lock mechanism is attached to the bottom of the outer tank. The fixed base 303 is connected and fixed to the outside of the bottom of the outer tub 200 by screwing a bolt or a screw. The fixed casing of the lock mechanism is mounted in the mounting hole, and by providing a sealing structure between the fixed casing and the mounting hole, it is possible to seal the portion so as to prevent water leakage. The sealing structure is an elastic seal ring.

Preferably, the upper end of the first mounting hole 201 is bent inward to form a fold, and the lower end of the fixed casing is bent outward to form a fold. When the fixed casing 305 enters the first mounting hole 201, the upper end of the fixed casing 305 abuts against the folded back of the upper end of the first mounting hole 201, and the end of the sealing cover provided between the fixed casing and the lock rod is fixed. It is pressed between the upper end of the casing 305 and the folded end of the upper end of the first mounting hole 201 to form a seal. Further, the lower end of the first mounting hole 201 abuts against the folded back of the lower end of the fixed casing, and a sealing structure such as an elastic seal ring is provided between them.

The sealing structure between the fixed casing 305 and the lock rod 302 is a sealing cover 307 that can expand and contract as the lock rod expands and contracts. The first end 308 of the hermetic cover 307 is hermetically connected to the fixed casing 305. Preferably, the first end of the sealing cover 307 is provided between the upper end of the fixed casing 305 and the folded end of the upper end of the first mounting hole 201, and the sealing cover has elasticity to form a seal. On the other hand, the second end 309 is sealingly connected to the lock rod 302 and is preferably pressed against the boss of the lock rod 302 by a nut to form a seal. According to this, since the water in the outer tank does not enter the fixed casing, the lock mechanism 300 is not damaged and water leakage does not occur. Preferably, the sealing structure is a corrugated tube-shaped sealing cover 307 which has a certain elasticity and is impermeable to water, and can realize sealing. The hermetic cover is a hermetic cover made of an elastic material such as a rubber cover.

A third end 310 extends in the axial direction from the second end 309 of the sealing cover 307, and the third end 310 is hermetically connected to the lower end of the fixed casing 305. The extending portion is a sealing cover that can expand and contract as the lock rod expands and contracts, and preferably has a corrugated tube shape. Since the sealing cover of the stretched portion has a secondary sealing action, even if a problem occurs in the sealing of the upper side, the sealing cover of the stretched portion exerts a further sealing action. , And water leakage is avoided. Preferably, the third end 310 is pressed by the lower end of the fixed casing 305 and the fixed base to form a seal.

When the lock rod 302 expands and contracts to the lowest position, the tip of the lock rod 302 becomes below the inner surface of the outer tank bottom. Preferably, when the lock rod expands and contracts to the lowest position, the tip of the lock rod becomes equal to the inner surface of the outer tank bottom. Therefore, it is possible to avoid damage to the lock rod 302 or the inner tub 100 due to the interference between the lock rod 302 and the inner tub 100 during rotation of the inner tub 100.

The lock hole 301 is provided in the inner tank flange 103. Smooth recessed grooves are provided on both sides of the inner hole flange 103 in the circumferential direction of the lock hole 301 to form guides. Alternatively, the guide has an independent structure, and a smooth concave groove is provided on the guide, and the lock hole 301 is located at the center of the concave groove. When the rotation speed of the inner tank 100 falls below a predetermined rotation speed, the lock rod 302 is controlled to move upward until it abuts the guide. Since the lock rod 302 also has a biasing force for upward movement due to the action of the spring 321, the guide and the lock rod 302 rub against each other as the inner tank rotates. When the lock hole 301 moves to the position of the lock rod 302 and corresponds to the lock rod 302, the lock rod moves upward to enter the lock hole 301, and the inner tank 100 is positioned and locked.

The lock mechanism further includes a position switch 336, and the lock rod 302 is provided with a position switch trigger structure. When the lock rod 302 enters the lock hole 301 and is locked in position, the trigger structure triggers the position switch and the position switch 336 outputs a position lock signal. Also, when the lock rod contracts and disengages from the lock hole and recovers position, the trigger structure triggers the position switch to output a position unlock signal. As described above, the control board of the washing machine controls the washing machine to execute the next process.

The position switch 336 is fixed to the sliding path outside the lock rod 302. Further, the trigger structure is provided on the lock rod 302 and moves together with the lock rod 302. When the lock rod 302 enters and/or leaves the lock hole 301, a trigger structure on the lock rod triggers the position switch to output a lock rod enter and/or leave signal. This makes it possible to correctly determine whether or not the lock rod is positionally locked or released from the position of the lock rod, so that the determination is accurate and the structure is simple.

The position switch 336 is a contact switch, and the contact of the contact switch faces the lock rod 302. The side surface of the lock rod facing the contact includes at least two side surfaces having different vertical distances from the contact. When the lock rod enters the lock hole and locks the position, the contact with one side contacts the contact switch, thereby triggering the contact switch to output the position lock signal. Further, when the lock rod contracts and separates from the lock hole and recovers the position, the contact is brought into contact with the other side surface, so that the contact switch is triggered to output the position lock release signal. As described above, the control board of the washing machine controls the washing machine to execute the next process. In addition, the connecting portion between the two side surfaces is an inclined transition surface, and the contact contacts the inclined transition surface during the contraction process of the lock rod. By providing the inclined transition surface, the contact switching between the two side surfaces and the contact smoothly proceeds, and the lock rod is prevented from being caught.

The lock rod 302 is a pillar and may be a triangular pillar or a polygonal pillar, and includes at least a first lock portion 337 and a second lock portion 338. The diameters of the first lock portion 337 and the second lock portion 338 are different, and the diameter of the first lock portion 337 is larger than the diameter of the second lock portion 338. When the lock rod 302 enters the lock hole 301 and is locked in position, the contact is brought into contact with the first lock portion 337, thereby triggering the contact switch to output a position lock signal. Further, when the lock rod 302 contracts and is disengaged from the lock hole 301 and the position is recovered, the contact is brought into contact with the second lock portion 338, thereby triggering the contact switch to output the position lock release signal. As described above, the control board of the washing machine controls the washing machine to execute the next process. Alternatively, when the lock rod 302 enters the lock hole and the position is locked, the contact is brought into contact with the second lock portion 338, thereby triggering the contact switch to output the position lock signal. Further, when the lock rod 302 contracts and separates from the lock hole and recovers the position, the contact is brought into contact with the first lock portion 337, so that the contact switch is triggered to output the position lock release signal. As described above, the control board of the washing machine controls the washing machine to execute the next process. Further, the connection portion between the first lock portion and the second lock portion is smoothly moved, and the contact is brought into contact with the inclined transition surface during the contraction process of the lock rod. By providing the inclined transition surface, the contact switching between the lock portion having a different diameter and the contact smoothly proceeds, and the lock rod is prevented from being caught.

Preferably, the lock rod 302 has a cylindrical shape so that it can be easily engaged with the lock hole. According to this, it becomes easier to enter the lock hole and fix the inner tank. The upper part of the lock rod is the first lock part 337 and the lower part of the lock rod is the second lock part 338. When the lock rod enters the lock hole and the position is locked, the contact is brought into contact with the second lock portion, so that the contact switch is triggered to output the position lock signal. On the other hand, when the lock rod contracts and disengages from the lock hole and recovers the position, the contact is brought into contact with the first lock portion, so that the contact switch is triggered to output the position lock release signal. The diameter of the first lock portion is larger than the diameter of the second lock portion, and the portion where the diameter changes changes gently due to the slope. In the contraction process of the lock rod, the contact contacts the inclined transition surface.

Alternatively, the position switch 336 is a sensor switch and the trigger structure is a signal output. The signal output unit is provided on the lock rod and moves together with the lock rod 302. The sensor switch is fixed to the outside of the lock rod, and the sensor portion of the sensor switch faces the lock rod. When the lock rod enters and/or leaves the lock hole, a signal output unit on the lock rod that outputs the entrance and/or the detachment corresponds to the sensor unit of the sensor switch, and enters and/or leaves the lock rod. The sensor switch is triggered to output. This makes it possible to correctly determine whether or not the lock rod is positionally locked or released from the position of the lock rod, so that the determination is accurate and the structure is simple. The signal output unit is a magnetic signal, a photoelectric signal, or a microwave signal output unit.

The lock rod 302 is provided with a lock signal output unit and a lock release signal output unit, respectively. When the lock rod 302 enters the lock hole 301 and is locked in position, the lock signal output unit directly faces the sensor unit of the sensor switch. Then, the sensor switch receives the lock signal output from the lock signal output unit and outputs the lock signal to the control board. On the other hand, when the lock rod disengages from the lock hole, contracts, and recovers its position, the lock release signal output section directly faces the sensor section of the sensor switch. Then, the sensor switch receives the lock release signal output from the lock release signal output unit and outputs the lock release signal to the control board.

A sliding path 304 is provided outside the lock rod, and the lock rod 302 is guided to move into the sliding path 304 and enter the lock hole 301. The position switch 336 is provided in the side wall of the sliding path or at the end of the sliding path. When provided in the side wall of the sliding path, the inner wall of the sliding path is provided with a notch for mounting the position switch, and the position switch 336 is mounted in the notch.

The position switch 336 is provided in the side wall of the sliding path of the fixed base 303 or at the end of the sliding path. Preferably, the position switch 336 is provided in a through hole of the mounting portion 329 of the housing 328 of the rotary motor 324 that allows the lock rod 302 to pass therethrough. The side wall of the through hole is provided with a notch for attaching the position switch 336. If it is provided at the location, wiring is easy because it is close to the rotary motor, and it is possible to layout together with the wiring of the rotary motor.

When the lock mechanism receives an error signal that the lock rod 302 has extended but has not entered the lock hole 301, the lock rod 302 is in contact with other positions on the bottom of the inner tank. Since the other positions of the bottom of the inner tank are lower than the lock holes 301, the lock rod 302 does not move up to the highest position and stops while contacting the bottom of the inner tank. At this time, since the rotary motor 324 continues to be driven so that the lock rod moves upward, the motor stalls or the stack, and further, the motor seizure occurs. In this case, the lock rod cannot be restored in position and cannot proceed to the next operation cycle. Therefore, manual adjustment is necessary, and the next operation cycle may not proceed unless the inner tank is disassembled.

In order to solve these problems, the lower end of the lock rod 302 is connected to a connecting rod having a crank connecting rod structure, and an idle stroke is provided between the connecting rod and the crank and/or between the connecting rod and the lock rod. It is provided. The idle stroke is a fixed movable space provided in the longitudinal direction of the connecting rod, and even if the connecting end of the crank and/or the lock rod moves in the movable space, the locked state does not change. When the lock mechanism receives an error signal that the lock rod is extended but has not entered the lock hole 301, the lock rod 302 is in contact with other positions on the bottom of the inner tank. Since the other positions of the bottom of the inner tank are lower than the lock holes, the lock rod 302 does not move up to the highest position and stops while contacting the bottom of the inner tank. At this time, the rotary motor continues to drive the lock rod 302, but since the lock rod is stopped while being in contact with the bottom of the inner tank, it is between the connecting rod and the crank and/or the connecting rod and the lock. The idle stroke provided between the rods begins to play a role. The rotary motor drives the crank or connecting rod to move within the idle stroke. Then, when the motor exceeds the highest drive level, the motor continues to drive so that the lock rod moves downward and the position is restored, and the process proceeds to the next operation cycle again. Therefore, the motor or the bottom of the inner tub is not damaged, and manual adjustment and disassembly maintenance of the washing machine are not required. As a result, the washing machine is prevented from malfunctioning and the user is not required to take unnecessary trouble.

The idle stroke is a fixed distance that can be compressed in the length direction of the connecting rod. When it becomes impossible to drive the lock rod 302, the compressible space is compressed. Then, when the motor exceeds the highest drive level, the motor continues to drive so that the lock rod moves downward and the position is restored, and the process proceeds to the next operation cycle again.

The idle stroke can be provided by the elliptical hole 331. The connecting rod is a connecting arm 330, and hinge connecting holes are provided at both ends of the connecting arm 330. A hinge connection hole at one end of the connecting arm is hinged to an end of the lock rod 302, and a hinge connection hole at the other end of the connecting arm is hinged to the crank. One or two of the hinge connection holes are elliptical holes 331. When the lock rod cannot be driven, the elliptical hole allows a certain displacement. Then, when the motor exceeds the highest drive level, the motor continues to drive so that the lock rod moves downward and the position is restored, and the process proceeds to the next operation cycle again.

Alternatively, the idle stroke can be provided by a spring, and when the lock rod 302 cannot be driven, the spring allows a constant displacement. Then, when the motor exceeds the highest drive level, the motor continues to drive so that the lock rod moves downward and the position is restored, and the process proceeds to the next operation cycle again. The connecting rod includes a connecting arm 330, a first spring 332 and a slide block 334. One end of the first spring 332 is fixed to the connecting arm 330, and the other end of the first spring 332 is fixed to the slide block 334. The slide block 334 is slidably connected to the connecting arm 330. One end of the connecting arm 330 to which the first spring 332 is fixed is hinge-connected to the lock rod 302. Further, one end of the connecting arm 330 where the slide block is provided is hinge-connected to the crank via the slide block 334. When the lock rod 302 abuts at another position on the bottom of the inner tank and cannot be driven, the slide block 334 slides on the connecting arm to compress the first spring 332. Then, when the motor exceeds the highest driving position, the motor continues to be driven so that the lock rod 302 moves downward and the position is restored, and the process proceeds to the next operation cycle again.

A groove/notch 339 is provided in the center of the connecting arm. After the first spring 332 and the slide block 334 are connected in series, the first spring 332 and the slide block 334 are provided in the groove/notch 339 in the length direction. The slide block 334 is slidably connected to the groove/notch 339. Further, one end of the first spring is fixed to the end of the groove/notch 339, and the other end is fixed to the slide block 334.

Preferably, mounting studs 335 are provided on the end of the groove/notch 339 and an end surface of the slide block that faces the end, and both ends of the first spring are covered by the mounting stud 335. It

Preferably, the two end surfaces of the mounting stud 335 that face each other are inclined surfaces or step end surfaces. According to this, since the assembling length of the first spring and the mounting stud can be maximized while guaranteeing the amount of compression, the spring is securely mounted and is not easily ejected at the time of compression. In addition, since the space is saved as compared with the case where the end face is flat, the space occupied in the height direction is minimized.

Example 2
7 to 12 show the drainage control mechanism of the inner tank according to the present invention. A drainage port is provided at the bottom of the inner tank. Further, the drainage control mechanism includes at least a stretchable valve body. The valve body moves upward to close the drain port, and moves downward to open the drain port. The valve body is fixed in the circumferential direction. When the valve body moves upward to block the drainage port 105, the drainage port 105 is controlled to close. Further, when the valve body moves downward and separates from the drain port 105, the drain port 105 is controlled to open. The drainage control mechanism further includes a crank connecting rod structure, and the lower end of the valve body is connected to the connecting rod of the crank connecting rod structure. When the drainage control mechanism receives an error signal that the valve body is extended but has not entered the drainage port, the valve body is in contact with another position of the inner tank bottom portion, for example, the inner tank flange. Since the other positions of the bottom of the inner tank are lower than the drainage port, the valve body has not risen to the highest position and is stopped while being in contact with the bottom of the inner tank. At this time, since the rotary motor continues to be driven so that the valve body moves upward, stall and stack of the motor and further seizure of the motor occur. In this case, the valve body cannot be restored in position and cannot proceed to the next operation cycle. Therefore, manual adjustment is required, and the next operation cycle may not proceed unless the inner tank is disassembled.

To solve these problems, an idle stroke is provided between the connecting rod and the crank and/or between the connecting rod and the valve body. When the drainage control mechanism receives an error signal that the valve body is extended but has not entered the drainage port, the valve body is in contact with other positions on the bottom of the inner tank. Since the other positions of the bottom of the inner tank are lower than the drainage port, the valve body has not risen to the highest position and is stopped while being in contact with the bottom of the inner tank. At this time, the rotary motor continues to drive the valve body, but since the valve body is stopped while being in contact with the bottom of the inner tank, it is between the connecting rod and the crank and/or the connecting rod and the valve body. The idle stroke provided between the two begins to play a role. The rotary motor drives the crank or connecting rod to move within the idle stroke. When the motor exceeds the highest driving position, the valve body moves downward to recover the position, and the motor continues driving so as to proceed to the next operation cycle again. Therefore, the motor or the bottom of the inner tub is not damaged, and manual adjustment and disassembly maintenance of the washing machine are not required. As a result, the washing machine is prevented from malfunctioning and the user is not required to take unnecessary trouble.

The idle stroke is a fixed distance that can be compressed in the length direction of the connecting rod. Alternatively, the idle stroke is a fixed movable space provided in the length direction of the connecting rod. Even if the connecting end of the crank and/or the valve body moves in the movable space, the drainage state does not change. When it becomes impossible to drive the valve element, the compressible distance is compressed. When the motor exceeds the highest driving position, the valve body moves downward to recover the position, and the motor continues driving so as to proceed to the next operation cycle again.

The idle stroke can be provided by an elliptical hole 442. The connecting rod is a connecting arm 421, and hinge connecting holes are provided at both ends of the connecting arm 421. A hinge connection hole at one end of the connecting arm is hinged to an end of the valve body, and a hinge connection hole at the other end of the connecting arm is hinged to the crank. One or two of the hinge connection holes are elliptical holes 422. When the valve body cannot be driven, the elliptical hole 422 allows a constant displacement. When the motor exceeds the highest driving position, the valve body moves downward to recover the position, and the motor continues driving so as to proceed to the next operation cycle again.

Alternatively, the idle stroke can be provided by a spring, and when the valve body cannot be driven, the idle stroke allows a constant displacement. When the motor exceeds the highest driving position, the valve body moves downward to recover the position, and the motor continues driving so as to proceed to the next operation cycle again. The connecting rod includes a connecting arm 421, a first spring 423, and a slide block 424. One end of the first spring 423 is fixed to the connecting arm 421, and the other end of the first spring 423 is fixed to the slide block 424. The slide block 424 is slidably connected to the connecting arm 421. One end of the connecting arm 421 to which the first spring is fixed is hinge-connected to the valve body. One end of the connecting arm 421 on which the slide block 424 is provided is hinged to the crank via the slide block 424. When the valve element comes into contact with another position on the bottom of the inner tank and cannot be driven, the slide block slides on the connecting arm to compress the first spring. When the motor exceeds the highest driving position, the valve body moves downward to recover the position, and the motor continues driving so as to proceed to the next operation cycle again.

A groove/notch is provided at the center of the connecting arm 421. The first spring 423 and the slide block 424 are connected in series and then provided in the groove/notch in the length direction. The slide block 424 is slidably connected to the groove/notch. Also, one end of the first spring 423 is fixed to the end of the groove/notch, and the other end is fixed to the slide block 424.

Preferably, mounting studs 425 are provided on the end of the groove/notch and an end surface of the slide block 424 that faces the end, and both ends of the first spring 423 are respectively covered by the mounting stud 425. To be done.

Preferably, the opposing end faces of the mounting studs 425 are sloped or stepped end faces. According to this, since the assembling length of the second spring and the mounting stud can be maximized while guaranteeing the amount of compression, the spring is securely attached and is not easily ejected at the time of compression. In addition, since the space is saved as compared with the case where the end face is flat, the space occupied in the height direction is minimized.

The valve body includes an extendable and retractable valve rod 401, and a sealing cover 402 that is provided on the valve rod 401 and is extendable and retractable as the valve rod expands and contracts. The lower end of the valve rod is connected to the connecting rod.

Preferably, the tip of the valve rod 401 has an elastic structure, or the sealing cover 402 extends to the tip of the valve rod to cover at least a part of the tip of the valve rod, and When the tip portion of the and the drain port correspond to each other, it extends at least to the inside of the drain port.

Preferably, the hermetic cover 402 extends to the tip of the valve rod 401 until it completely covers the tip of the valve rod 401. One end of the hermetic cover 402 located at the tip of the valve rod 401 has a sealing structure and is covered by the tip of the valve rod 401. That is, the first end 404 of the hermetic cover 402 has a hermetic structure and is provided on the tip of the valve rod 401. In addition, the second end 405 of the hermetic cover 402 is connected to the fixed casing. Preferably, the hermetic cover 402 has a corrugated tube shape. The valve rod 401 moves upward together with the sealing cover 402, and when reaching the drainage port 105, presses the first end of the sealing cover 402 until it comes into close contact with the drainage port 105 to close the drainage port 105. Preferably, the upper surface of the valve rod has a spherical structure protruding upward so that the sealing effect is better. The hermetic cover is a hermetic cover made of an elastic material such as a rubber cover.

A second spring 413 is provided on the outer circumference of the valve rod 401. One end of the second spring 413 is fixed to the upper part of the valve rod 401, and the other end is fixed to the fixing structure. The second spring is a compression spring, which can be driven to move the valve rod upward by the restoring force of the second spring and can push up the valve body to close the drainage port.

The downward position recovery movement of the valve rod 401 is driven by the crank connecting rod structure. On the other hand, the upward extension of the valve rod 401 is driven by the recovery force of the second spring 413 after the pulling force of the crank connecting rod structure is released. In addition, the recovery force of the second spring 413 also allows the valve body to close the drain port 105.

Preferably, a blocking piece 403 capable of sealing the drainage port at the bottom of the inner tank is provided at the tip of the valve rod 401. Also, the valve rod 401 preferably has a T-shaped structure. A second spring 413 is provided below the blocking piece. One end of the second spring 413 contacts the lower surface of the blocking piece 403, and the other end is fixed.

The drainage control mechanism further includes a fixed base 407 of the valve rod 401, and a sliding path is provided at the center of the fixed base. The sliding path 408 of the valve rod 401 is formed by bending the center of the fixed base 407 upward and/or downward. The valve rod penetrates the sliding path. Preferably, the other end of the second spring is fixed to the fixed base. The sliding path 408 has a sleeve shape, and the inner diameter is slightly larger than the outer diameter of the valve rod 401. However, the gap should not be excessively small so that the valve rod 401 can freely slide in the sliding path 408. In addition, the gap should not be excessively large so that the deviation in the movement direction of the valve rod 401 does not spread too much. A plurality of axial projections are distributed in the circumferential direction on the inner wall of the sliding path 408, and the tips of the projections make line contact with the surface of the valve rod 401. In this way, since the plurality of projections play a role of guiding the valve rod 401, the valve body is accurately butted against the drain port without wobbling. Further, as a result of the reduced contact area and reduced friction, the valve rod 401 can be slid freely within the sliding path 408.

The drainage control mechanism further includes a fixed casing 409. The fixed casing 409 has a sleeve shape and is attached to an upper portion of the fixed base 407. The valve body is provided in the fixed casing, and the sealing cover of the valve body is connected to the fixed casing.

Preferably, the sealing cover 402 of the valve body is connected to the lower end of the fixed casing. In addition, the outer edge of the sealing cover located at the tip of the valve rod extends outward to form a brim. When the valve body moves downward to open the drainage port, the flange is hooked on the upper end of the fixed casing. When the valve body moves downward and separates from the drain port 105, the water in the inner tank 100 immediately flows out downward, but the water flows to the upper end of the valve body, that is, the first end 404 and the collar 410, and then , And is guided by the collar 410 and diffuses to the outer periphery of the valve body. As a result, it is possible to avoid the situation where the water flow directly flows into the fixed casing and impacts the drainage control structure. Further, when the valve body is at the lowest position, the collar 410 is hooked on the fixed casing 409 or the upper end of the second mounting hole 204. This prevents foreign matter such as lint in the water stream from entering the fixed casing and hindering expansion and contraction of the valve body. A water leak port is provided in the lower portion of the fixed casing. A drainage pipe is provided at the water leakage port 411, and the drainage pipe is connected to the drainage path of the washing machine. The sealing cover 402 is provided on the valve rod 401, and the second end 405 of the sealing cover 402 seals the fixed casing 409. Since it is impossible to completely prevent the water flow from entering the space between the fixed casing 409 and the sealing cover 402 even with a single drop of water, it is impossible to completely prevent the water from entering the space by providing the water leakage port 411. The water is discharged from the mouth 411 to the drain path of the washing machine so that it can be discharged from the washing machine.

Preferably, the third end extends outward from the outer edge of the first end 404 of the hermetic cover 402, and the third end is hermetically connected to the upper end of the fixed casing 409. The extending portion is a sealing cover that can expand and contract as the valve rod expands and contracts, and is preferably a corrugated tube-shaped sealing cover. Since the space between the stationary casing 409 and the sealing cover 402 can be sealed by the sealing cover between the stretched third end and the first end 404, water in the space between the stationary casing 409 and the sealing cover 402 can be sealed. Inflow is avoided. In this case, the sealing cover between the second end 405 and the first end 404 can be omitted. However, for the sake of completeness, or in order not to invalidate the sealing by the sealing cover between the third end 404 and the first end 404, a sealing cover between the second end 405 and the first end 404 may be provided. Optimal. In this case, since the space between the fixed casing 409 and the sealing cover 402 is sealed, it is not necessary to provide the water leakage port 411 in the lower portion of the fixed casing 409.

The crank is connected to a rotary motor 416, and the rotary motor 416 is provided inside a housing 417. The housing is provided with a mounting portion 418, and the mounting portion is fixed to a lower portion of the fixed base 407, or the mounting portion 418 and the fixed base 407 are integrally molded. Preferably, the crank is an eccentric wheel 415. An eccentric shaft of the eccentric wheel 415 is hingedly connected to the connecting rod, and a center of the eccentric wheel 415 is connected to the rotary motor.

The drain control mechanism is provided at the bottom of the outer tub of the washing machine, and a sealing structure is provided between the drain control mechanism and the outer tub.

Preferably, the outer tank is provided with the second mounting hole 204 of the drainage control mechanism. The fixed base of the drainage control mechanism is attached to the bottom of the outer tank, and the fixed casing of the drainage control mechanism is attached to the second mounting hole. Further, a sealing structure is provided between the fixed casing and the second mounting hole.

Preferably, the upper end of the second mounting hole 204 is bent inward to form a fold, and the lower end of the fixed casing 409 is bent outward to form a fold. When the fixed casing 409 enters the second mounting hole 204, the upper end of the fixed casing 409 comes into contact with the fold-back of the upper end of the second mounting hole 204, and the lower end of the second mounting hole 204 comes into contact with the fold-back of the lower end of the fixed casing 409. Further, the second end 405 of the sealing cover 402 is pressed between the lower end of the second mounting hole 204 and the folded back of the lower end of the fixed casing 409 to form a seal, so that water leakage at the location is avoided.

Example 3
FIG. 13 shows a method of controlling the water-saving washing machine according to the present invention. A lock hole and a drain are provided at the bottom of the inner tub of the washing machine, and a lock mechanism and a drain control mechanism are provided at the bottom of the outer tub of the washing machine. The steps of the method are as follows.

Step 1: When entering the cleaning/rinsing process, the control board controls the lock mechanism to engage the lock hole to lock the inner tank, and the drain control mechanism closes the drain port. Water is supplied to the inner tank until the water supply valve reaches a predetermined water level or amount, and then cleaning is started in the absence of water between the inner tank and the outer tank.

When the cleaning/rinsing signal is received, the control board issues an inner tank lock command, and rotationally drives the inner tank so that the lock hole corresponds to the position of the lock rod. Subsequently, the lock rod of the lock mechanism is controlled to enter the lock hole, and when the lock rod enters the lock hole and is positioned, the lock mechanism outputs a position lock signal to the control board. Alternatively, when the cleaning/rinsing signal is received, the control board issues an inner tank lock command, and controls the lock rod of the lock mechanism to extend while rotationally driving the inner tank. When the positions of the lock hole and the lock rod correspond, the lock rod enters the lock hole. When the lock rod enters the lock hole and is positioned, the lock mechanism outputs a position lock signal to the control board.

When the control board issues an inner tank lock command and receives a position lock signal, it issues a drain port closing command and controls the valve body of the drainage control mechanism to extend and close the drain port. When the control board does not receive the position lock signal output from the lock mechanism within the predetermined time or the predetermined number of detections after issuing the inner tank lock command, the control board recovers the position by contracting the lock rod. Control, and issue another internal tank lock command.

If the control board does not receive the position lock signal output from the lock mechanism within the predetermined time or the predetermined number of detections after issuing the inner tank lock command a predetermined number of times, the control board issues an alert command and alerts. To execute. As a result, the situation where the control board continues to issue commands even after the occurrence of an abnormality and the parts are damaged is avoided.

Step 2: After cleaning/rinsing, proceed to the drainage process. The control board controls the drain control mechanism so that the drain is opened and most of the water in the inner tank is drained from the drain. When the cleaning is completed, the control board issues a drain valve opening command, and the valve body of the drain control mechanism contracts to restore its position, and controls to open the drain port for draining.

Step 3: When drainage is completed, proceed to the dehydration process. The control board controls the lock mechanism to unlock the inner tank and rotate the inner tank to perform dehydration. When the drainage is completed, the control board issues an inner tank release command and controls the lock rod to contract. When the lock rod contracts and the position is restored, the lock mechanism issues a position unlock command. When the control board receives the position unlock command, the control board controls to rotate the inner tank for dehydration.

In Steps 2 and 3, the control board controls the lock mechanism to be released from the lock hole to release the inner tank at the same time as or before the drain control mechanism opens the drain port.

The lock rod is a diametrically deformable column, and the lock mechanism is provided with a position switch corresponding to the outside of the lock rod. During the movement of the lock rod, different diameter parts of the lock rod correspond to the contacts of the position switch depending on whether the lock rod enters the lock hole and is positioned, or contracts and recovers the position, and the position switch outputs a corresponding signal. A trigger is given to output each.

When the lock rod enters the lock hole and is positioned, the contact of the small diameter portion of the lock rod is released corresponding to the position switch, so that the position switch outputs a position lock signal to the control board. Further, when the lock rod contracts and the position is restored, the large diameter portion of the lock rod compresses the contact corresponding to the contact of the position switch, and the position switch outputs the position lock release signal to the control board. ..

Alternatively, when the lock rod enters into the lock hole and is positioned, the large-diameter portion of the lock rod compresses the contact corresponding to the position switch, and the position switch outputs the position lock signal to the control board. To do. When the lock rod contracts and recovers its position, the contact of the small diameter portion of the lock rod corresponding to the contact of the position switch recovers, and the position switch outputs a position lock release signal to the control board.

By controlling the operation procedure of the lock mechanism of the inner tank and the drainage control mechanism at the drain port of the inner tank by the above control method, cleaning can be realized without the presence of water between the inner tank and the outer tank, Dehydration is also possible. In addition, according to the control method described above, accurate control is performed, and water-saving washing by the washing machine is guaranteed without any problem.

Note that the above is merely a preferred embodiment of the present invention, and a person skilled in the art can make various modifications and improvements on the assumption that the principle of the present invention is not deviated. Considered a range.

100 Inner Tank 101 Inner Tank Body 102 Inner Tank Bottom 103 Inner Tank Flange 104 Balance Ring 105 Drainage Port 106 Drainage Hole 200 Outer Tank 201 First Mounting Hole 202 Outer Tank Bottom 204 Second Mounting Hole 300 Lock Mechanism 301 Lock Hole 302 Lock rod 303 Fixed base 304 Sliding path 305 Fixed casing 306 Seal ring 307 Sealing cover 308 First end 309 Second end 310 Third end 320 Boss 321 Second spring 323 Eccentric ring 324 Rotation motor 328 Housing 329 Mounting portion 330 Connection Arm 331 Elliptical hole 332 First spring 334 Slide block 335 Mounting stud 336 Position switch 337 First lock part 338 Second lock part 339 Groove 400 Drainage control mechanism 401 Valve rod 402 Sealing cover 403 Blocking piece 404 First end 405 Second End 407 Fixed base 408 Sliding path 409 Fixed casing 410 Collar 411 Water leak 413 Second spring 415 Eccentric ring 416 Rotating motor 417 Housing 418 Mounting part 421 Connecting arm 422 Elliptical hole 423 First spring 424 Slide block 425 Mounting stud 426 groove

Claims (10)

In a lock mechanism for an inner tank, which includes a lock rod capable of reciprocating in an axial direction, a sliding path in which the lock rod moves, and a drive unit that drives the movement of the lock rod,
The locking mechanism includes a connecting rod and a crank connected to each other ,
The connecting rod is a connecting arm,
Hinge connecting holes are respectively provided at both ends of the connecting arm, a hinge connecting hole at one end of the connecting arm is hinged to an end portion of the lock rod, and a hinge connecting hole at the other end of the connecting arm is connected to the crank. A lock mechanism , which is hinge-connected, wherein one or two of the hinge connection holes are elliptical holes . The connecting rods, the articulated arm, the first includes a spring and a slide block, one end of the first spring is fixed to the articulated arm, the other end of the first spring is fixed to the slide block, the slide block articulated arm One end of the connecting arm to which the first spring is fixed is hinge-connected to the lock rod, and one end of the connecting arm provided with a slide block is connected to the crank via the slide block. The lock mechanism for the inner tank according to claim 1 , wherein the lock mechanism is hinged. A recess groove/notch is provided at the center of the connecting arm, and the first spring and the slide block are connected in series, and then provided in the recess groove/notch in the length direction. Is slidably connected to the groove/notch, one end of the first spring is fixed to an end of the groove/notch, and the other end is fixed to a slide block. Item 3. The inner tank locking mechanism according to Item 2 . Mounting studs are provided on the end of the groove/notch and an end surface of the slide block that faces the end, and both ends of the first spring are covered by the mounting stud. The lock mechanism for the inner tank according to claim 3. A boss is provided on the upper portion of the lock rod, and a second spring is provided on the lower portion of the boss. One end of the second spring contacts the lower surface of the boss and the other end is fixed, and the lock rod moves downward. inner tank lock mechanism according to any one of claims 1 to 4, the second spring, characterized in that it is compressed when the. The lock mechanism further includes a fixed base of a lock rod, a sliding path is provided in the center of the fixed base, the lock rod penetrates the sliding path, and the other end of the second spring serves as a fixed base. The lock mechanism for the inner tank according to claim 5 , wherein the lock mechanism is fixed. The lock mechanism further includes a fixed casing, the fixed casing is fixed to an upper portion of the fixed base, the lock rod and the sliding path are provided in the fixed casing, and a sealing structure is provided between the fixed casing and the lock rod. inner tank lock mechanism according to claim 6, characterized in that is provided. The crank is connected to a rotary motor, the rotary motor is provided in a housing, and the housing is provided with a mounting portion, and the mounting portion is fixed to a lower portion of a fixed base, or the mounting portion and the fixed portion. inner tank lock mechanism according to any one of claims 1 to 7, the base is characterized in that it is integrally molded. 9. The inner tank according to claim 8, wherein the crank is an eccentric wheel, an eccentric shaft of the eccentric wheel is hinge-connected to the connecting rod, and a center of the eccentric wheel is connected to the rotary motor. Lock mechanism. It is a washing machine provided with the lock mechanism in any one of Claims 1-9, Comprising: The said lock mechanism is provided in the outer tub of the said washing machine, the lock hole is provided in the inner tub, and the lock rod is in the lock hole. When entering, the inner tank is locked, when the lock rod is disengaged from the lock hole, the inner tank is unlocked, and a sealing structure is provided between the lock mechanism and the outer tank.
Mounting holes of the lock mechanism is provided in the outer tub, the fixed base of the locking mechanism is attached to the outer tub bottom stationary casing of the lock mechanism is mounted in the mounting hole, between the stationary casing and the mounting hole A washing machine with a sealed structure.